Linq groupby in c#

public void LinqGroupby() 
{ 
     List<Product> products = GetProductList(); 
      
        var groupby= 
            from p in products 
            group p by p.Category into g 
            select new { Category = g.Key, Products = g }; 
  
   gridview1.datasource=groupby;
   gridview1.databind();
}